How to Find the Correct Size Wiper Blades for Your Car?

The wiper blades play a critical role in ensuring good road visibility, especially when driving in bad weather. They help to clear dirt, insects, and water from the windscreen, which is essential for safety. Since wiper blades wear out over time due to exposure to the elements and use, they should be checked and replaced regularly.

One of the key aspects when replacing them is choosing the correct size of windscreen wiper blades.

Why Does the Correct Size of Windscreen Wipers Matter?

Using wiper blades of the wrong size can lead to issues with cleaning the windscreen and even cause damage.

• If you fit too small wiper blades, they won’t cover the entire windscreen surface, leaving uncleaned areas. This can restrict visibility and create dangerous “blind spots.”
• If you use too large wiper blades, they will wear out faster. Excess rubber at the blade’s end may get tangled or damaged during operation.
• A damaged rubber blade can cause the metal wiper arm to rub against the windscreen, which may damage the glass over time and increase the likelihood of cracks.
• Additionally, ineffective wiper blades can result in a failed MOT test.

That’s why it’s important to replace windscreen wiper blades with ones of the same size.

How to Find the Correct Size Windscreen Wipers for Your Car?

Finding the right size for windscreen wiper blades is straightforward, and there are several reliable methods:

• Use an online lookup tool by entering your car’s registration number. This is the easiest method. Most automotive retailers have tools on their websites where you simply input your car’s registration number, and the system automatically displays the correct wiper blade size for your vehicle. If you don’t know the registration number, you can search by the car’s make and model.
• Check your car’s owner’s manual. Information about the type and size of compatible wiper blades is often listed in the manual. If you don’t have a physical copy, it can often be found online.
• Inspect the wiper blades themselves. Some wiper blades have the manufacturer’s details or size marked directly on the blade. This is ideal if you want to purchase the exact same blade.
• Measure the blades manually. You can pull the wiper arm away from the windscreen and measure the blade’s length using a tape measure. However, it’s always recommended to double-check the size using an online registration lookup tool for greater accuracy.

Don’t forget to check the rear wiper blade, if your car is equipped with one. Although it may not be used as frequently as the front blades, it’s still exposed to weather conditions and can wear out over time.

Windscreen Wiper Blade Sizes

Wiper blades are not universal. The market offers a wide range of sizes designed for different types of vehicles.

Sizes are typically measured in inches or millimetres. The typical size range is from 9 to 32 inches, which corresponds to approximately 230 mm to 813 mm.

When Should You Replace Windscreen Wiper Blades?

The rubber on wiper blades naturally degrades over time. This is influenced by weather conditions (heat, cold, UV rays, precipitation) as well as general wear from use.

Depending on usage frequency and conditions, wiper blades may start to deteriorate as early as 6 months. However, it’s generally recommended to replace windscreen wiper blades approximately every 12 months to ensure maximum visibility and safety on the road.

Regularly check the condition of your wiper blades (e.g., every few months) or immediately if you notice any issues while driving. Checking the condition of wiper blades is part of annual servicing and MOT tests.

Signs that indicate the need to replace wiper blades:

• The blades leave streaks or uncleaned areas on the windscreen.
• They move unevenly or jerkily across the glass.
• The blades don’t make full contact with the windscreen surface, leaving some areas dry.
• You notice visible cracks or uneven edges on the rubber blades.
• The blades squeak or scrape during operation.

If you notice any of these signs, it’s time to consider replacing the wiper blades.

Conclusion

Keeping windscreen wiper blades in good condition and choosing the correct size is vital for your safety on the road. Incorrectly sized or worn-out wiper blades not only impair visibility but can also lead to windscreen damage and issues with passing the MOT.

The easiest way to quickly and accurately determine the correct wiper blade size is to use an online lookup tool on automotive retailer websites. You can also seek assistance from professionals or opt for a wiper blade fitting service at a service centre.